Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Dean L. Jacobson"'
Publikováno v:
Materials and Manufacturing Processes. 9:1143-1154
Tensile properties of pure molybdenum, a molybdenum - 0.5 at % hafnium carbide, and a molybdenum - 5 at % rhenium - 0.5 at % hafnium carbide were evaluated with a strain rate of 10'Vsec over a temperature region of 1200 to 2400 K in ultrahigh vacuum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ce97ee57d336daba2c75ab77725653e
https://doi.org/10.1080/10426919408934981
https://doi.org/10.1080/10426919408934981
Publikováno v:
Materials Science and Engineering: A. 177:89-94
The creep behavior of arc-melted molybdenum-0.5% hafnium carbide and commercial purity molybdenum was evaluated at temperatures from 1600 to 2100 K while subjected to stresses of 10–60 MPa in a vacuum below 1.3 × 10 −6 Pa (1.0 × 10 −8 Torr).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5127881765efc986b27ed19e7c4a88ad
https://doi.org/10.1016/0921-5093(94)90481-2
https://doi.org/10.1016/0921-5093(94)90481-2
Publikováno v:
Scripta Metallurgica et Materialia. 29:729-732
Molybdenum (Mo) has melting temperature of 2,890 K and good fabricability at room temperature. It also possesses a relatively low density (10.22 g/cm[sup 3]) as compared with other common refractory metals. The major deterrent to the implementation o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0d6aff30cdb5f6da0851886e9a4e665
https://doi.org/10.1016/0956-716x(93)90216-f
https://doi.org/10.1016/0956-716x(93)90216-f
Publikováno v:
Metallurgical Transactions A. 24:951-958
Effective work functions from the polycrystalline surfaces of three arc-melted binary tungsten-osmium alloys of varying composition and one sintered tungsten-osmium alloy were examined. Alloy content varied from 4.76 to 13.05 wt pct osmium. Emphasis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac9c440f1cd3e607efb59b584faecf6a
https://doi.org/10.1007/bf02656516
https://doi.org/10.1007/bf02656516
Publikováno v:
Journal of Thermophysics and Heat Transfer. 6:680-684
A photon counting pyrometer was used effectively in determining the normal spectral emittance of tungsten, rhenium alloys at 1500-2500 K. These tungsten, rhenium alloys were then compounded with thoria and hafnium carbide separately, and the normal s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffeeba62d29247f6d2182e53b7fac895
https://doi.org/10.2514/3.11551
https://doi.org/10.2514/3.11551
Publikováno v:
Acta Metallurgica et Materialia. 40:2225-2232
Tungsten--rhenium--hafnium carbide (W---Re---HfC) alloy is the strongest metallic material at temperatures greater than 2000 K. In the this paper, the mechanical properties of tungsten and a W--3.6Re--0.26HfC alloy were determined from 1700 to 2980 K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e838970ee51323301a6f1b014bc1234f
https://doi.org/10.1016/0956-7151(92)90141-z
https://doi.org/10.1016/0956-7151(92)90141-z
Autor:
Dean L. Jacobson, L.A.D. Cruz
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 11:223-234
Dilute solution tungsten-iridium alloys with less than 2 wt % Ir have been found to exhibit the highest work functions among candidate alloys for thermionic emitters. Recent studies have investigated the effect of iridium on the work function of tung
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4158e5df90c71381ad51b09c9c1f37bd
https://doi.org/10.1016/0263-4368(92)90049-8
https://doi.org/10.1016/0263-4368(92)90049-8
Autor:
Anhua Luo, Dean L. Jacobson
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 11:97-103
The creep behavior of an arc-melted tungsten-3.6% rhenium-0.33% zirconum carbide, considered to be a potential emitter material for a thermionic energy converter, was evaluated at elevated temperatures (1900–2400 K) under stresses of 15–80 MPa in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7746780f5fb7a451810c877004df779d
https://doi.org/10.1016/0263-4368(92)90072-a
https://doi.org/10.1016/0263-4368(92)90072-a
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 11:1-8
The strength properties, deformation behavior, and fracture mode of arc-melted (A/M) and powder-metallurgy-processed (P/M) tungstens were determined from 1600 to 2700 K in order to provide the baseline data for the development of tungsten-base alloys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2660ada31a01261f11fd55953a573224
https://doi.org/10.1016/0263-4368(92)90079-h
https://doi.org/10.1016/0263-4368(92)90079-h
Publikováno v:
Materials Science and Engineering: A. 148:219-229
The tensile properties of WRe1wt.%ThO2 alloys with rhenium concentrations of 0–26wt.% were examined in a temperature range 1600–2600 K. The effects of rhenium concentrations, testing temperature and strain rate on the strength properties an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b99be4206b6cfa5515dedc1ecb9ebe34
https://doi.org/10.1016/0921-5093(91)90824-7
https://doi.org/10.1016/0921-5093(91)90824-7